[RFC PATCH 0/7] powerpc: KASAN for 64-bit 3s radix

[Daniel Axtens <dja@axtens.net>]

Building on the work of Christophe, Aneesh and Balbir, I've ported
KASAN to Book3S radix.

It builds on top Christophe's work on 32bit, and includes my work for
64-bit Book3E (3S doesn't really depend on 3E, but it was handy to
have around when developing and debugging).

This provides full inline instrumentation on radix, but does require
that you be able to specify the amount of memory on the system at
compile time. More details in patch 7.

Regards,
Daniel

Daniel Axtens (7):
  kasan: do not open-code addr_has_shadow
  kasan: allow architectures to manage the memory-to-shadow mapping
  kasan: allow architectures to provide an outline readiness check
  powerpc: KASAN for 64bit Book3E
  kasan: allow arches to provide their own early shadow setup
  kasan: allow arches to hook into global registration
  powerpc: Book3S 64-bit "heavyweight" KASAN support

 arch/powerpc/Kconfig                         |   2 +
 arch/powerpc/Kconfig.debug                   |  17 ++-
 arch/powerpc/Makefile                        |   7 ++
 arch/powerpc/include/asm/kasan.h             | 116 +++++++++++++++++++
 arch/powerpc/kernel/prom.c                   |  40 +++++++
 arch/powerpc/mm/kasan/Makefile               |   2 +
 arch/powerpc/mm/kasan/kasan_init_book3e_64.c |  50 ++++++++
 arch/powerpc/mm/kasan/kasan_init_book3s_64.c |  67 +++++++++++
 arch/powerpc/mm/nohash/Makefile              |   5 +
 include/linux/kasan.h                        |  13 +++
 mm/kasan/generic.c                           |   9 +-
 mm/kasan/generic_report.c                    |   2 +-
 mm/kasan/init.c                              |  10 ++
 mm/kasan/kasan.h                             |   6 +-
 mm/kasan/report.c                            |   6 +-
 mm/kasan/tags.c                              |   3 +-
 16 files changed, 345 insertions(+), 10 deletions(-)
 create mode 100644 arch/powerpc/mm/kasan/kasan_init_book3e_64.c
 create mode 100644 arch/powerpc/mm/kasan/kasan_init_book3s_64.c

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2.19.1